You can see the mortgage amount in this calculator, you could borrow based on your monthly rental income.
The BTL calculator assumes a minimum rental cover of 125% at the higher of the product pay rate or a 5.00% stress rate.
Please note that buy to let lenders calculate rental cover differently, and some may require you to charge a higher or lower rent. Speak to your advisor for more information about rental cover rates.
If the mortgage repayments will be over the rent, you can charge you might consider attempting to save up a larger buy-to-let deposit.
The figures from the calculator can help start your search for a mortgage agreement in principle. Call us to get a full mortgage illustration, worked out from your deposit, rental income and personal circumstances.